Safety device or guard for use in connection with passenger elevators or lifts.



B. BATES.

SAFETY DEVICE 0R GUARD FOR USE IN CONNECTION WITH PASSENGER ELEVATORS 0R LIFTS. APPLICATION FILED AUG. 21, 1911.

1,023,61 1. Patented Apr. 16, 1912.

A 3 5HEETB-SHEET 1.

ill]

Wizesses flnfl m COLUMBIA PLANOORAPH CO-,WASHINOTON, n. c

B. BATES. v SAFETY DEVIGE 0R GUARD FOR USE IN CONNECTION WITH PASSENGER ELEVATORS OR LIFTS.

APPLICATION FILED AUG. 21, 1911.

Patented Apr. 16, 1912.

3 SHEETS-SHEET 2.

x X x x x I COLUMBIA PLANOGRAPH CO.. WASHINGTON. D. C.

B. BATES.

.EAPETY DEVICE 0R GUARD FOR USE IN CONNECTION WITH PASSENGER ELEVATORS 0B LIFTS. APPLIUATION FILED AUG. 21, 1911.

1,023,61 1. Patnted Apr. 16, 1912.

3 SHEETS-SHEET 3.

Fig.5. Fig. 5.

COLUMBIA PLANOGRAPH Cm. WASHINGTBNID. c

BENJAMIN BATES, 0F BELFAST, IRELAND, ASSIGNOR 0F ONE-HALF TO MAURICE Y GOLDRING, 0F BELFAST, IRELAND.

SAFETY DEVICE OR GUARD FOR USE IN CONNECTION WITH PASSENGER ELEVATORS OR LIFTS. t

Specification of Letters Patent.

Application filed August 21, 1911.

Patented Apr. 16, 1912. Serial No. 645,200.

T0 aZZ whom it may concern:

Be it known that I, BENJAMIN BATES, a subject of the King of Great Britain and Ireland, and resident of Belfast, Ireland, have invented certain new and useful Improvements in Safety Devices or Guards for Use in Connection with Passenger Elevators or Lifts, of which the following is a specification.

This invention relates to passenger elevators and lifts and has for its object to provide an improved safety device or guard of the continuous guard type and which works entirely within the well in which the elevator or lift works and which will absolutely prevent the possibility of an accident due to any person opening the usual landing gates and stepping into the well when the cage or car is not at that particular landing place.

The safety device which is of the continuous guard type in which the guard passes from the top of the cage over rollers,

or equivalent, down the back of the well and under the rollers at the bottom to the bottom of the cage, is under my invention made in two or more sections, the sections passing from the top of the cage or car at the side next to the landings over rollers, wheels or equivalent at the top of but within the well,

then down the back of the latter and under rollers, wheels or equivalent at the bottom of the well to the underside of the cage or car at the side next to the landings, the arrangement being such that the sections of the guard work entirely within the well and clear of the usual lifting ropes or other lifting gear, means being provided where necessary for widening the distance between the adjoining edges of the guard sections so that they may clear the lifting ropes, the guard sections being in a known manner prevented from sagging or being accidentally pushed inward toward the well.

In order that my invention may be clearly understood I have hereunto appended three explanatory sheets of drawings whereon I have shown by wayof example three different types of guards made in accordance with my invention.

Figure 1 is a front elevation of a lift well showing the lift car at the top floor and showing a two section guard arranged to work within the well. Fig. 2 is a section on the line X, X, Fig. 1. Figs. 3 and 4.- are resections (Z and (Z inward toward the well I provide spectively part cross section and part front elevation of a well having a two section guard working with chains and chain wheels and generally similar to the guard shown in Figs. 1 and 2. Figs. 5 and 6 are respectively part sect-ion'and part elevation of a well having a two section guard the center pulley wheels being set to clear the lifting ropes and the guard sections mounted on spring supports. Figs. 7 and 8 are respectively detail elevation and plan showing the means for preventing the guard from sagging or being pushed inward.

On the drawings the same reference letters wherever repeated indicate the same or similar parts.

Referring to the drawings, a is the elevator or lift cage or car, and Z) the well within which it works.

no are the usual lifting ropes, chains or the The safety device shown in the drawings at Figs. 1 and 2 consists of a guard in two each of the sections comprising two wire ropes, chains or equivalent Z each secured at one of its ends to the top of the car a by means of a spring 6 attached to the top of the car a and at its other end to the bottom of the car a by means of of a spring e attached to the bottom of the car. In place of the springs a balance weight or weights may be provided.

The ropes or the like d are secured to the car a at the side next to, and which faces the landings 5 The guard sections 6Z1 and d are made with an opening d between them of sufficient width to allow the ropes c to pass freely between the sections at the top of the well 6. The guard sections (Z and 61 pass over pulleys f arranged at the top within the well over the top of the car a and down the back of the well and under pulleys f arranged at the bottom thereof and the arrangement is such that the elevator car a in its movements up and down in the well automatically pulls the guard sections d and d over the side of thewell facing the landings b so that the only opening from the landings toward the well 5 is that into the car a.

In order to prevent the guard sections al and d from sagging or from being pushed T-shaped slots or guideways 9 (see Figs. 7 and 8) in the edge of each landing platform 6 and I secure projecting pieces or rollers h to the ropes, chains or the like d and adapted to pass through the slots 9 when the lift moves up and down, said rollers it being so spaced on the ropes or chains (Z that when the lift stops at any landing place they are in engagement with their corresponding slots 9 so that if the guard be pushed from the outside the rollers h will limit its movement inward and similarly they will prevent any material sagging of the guard sections.

In certain cases it may be found desirable to have chains (Z and chain pulleys 70 at the top and bottom of the well. Such an arrangement is shown in Figs. 3 and 4. The guard sections in Figs. 3 and 4: are also constructed of somewhat different mesh to those in Figs. 1 and 2 but the arrangement is otherwise generally the same, and in this case also retaining devices it (see Fig. 3) may be employed to prevent sagging of the guard sections.

In Figs. 5 and 6 I have shown how the central adjoining edges Z of the guard sections Z may be arranged to open in order to clear the ropes c. The pulleys m carrying the adjoining edges of the guard sections are set on the shafts m so that, as shown in Fig. 6, the space between the meeting edges Z is widened across the top to allow the lifting ropes 0 to pass between them. To make this widening of the space between the sections possible the supports Z between the edge chains Z have a spring action each consisting in the example shown in the drawings, of a tube Z having insideit a spring Z, a spindle Z being inserted into each end of the tube bearing against the spring 1*, the other end of the spindle Z being secured to the edge chains P. This arrangement permits of the necessary give as the guard sections pass over the pulleys m taining means it may also be used in this modification.

With the hereinbefore described guards in use there is absolutely no possibility of anyone getting into the elevator well from any of the landings except by entering the elevator. If a person opened one of the landing gates when the elevator car was either above or below the landing he would simply be brought up against the guard or guards, and could not possibly fall into the well.

The arrangement described for clearing the lifting ropes or other lifting gear at the top of a well are equally suitable for clearing ropes or other lifting gear at the bottom of the well.

Having now fully described my invention what I claim and desire to secure by Letters 7 Patent is The T slot 9 and re-' means for widening the space between the sections for the passage of the cage hoisting ropes and each section secured to the elevator cage above and below the opening therein, and guiding means within the well of the elevator whereby the said sections are led, within the well of the elevator, to the top of the well, along the top to the back of the well, down behind the cage to the foot of the well and from thence up the front of the well to the foot of the cage.

2. A safety device for use in connection with elevators, comprising a guard made in two sections having a space therebetween for the passage of the cage hoisting means, each section being secured to the elevator cage above and below the opening therein, means for widening the space between the sections in the vicinity of the cage hoisting means, and rotary guiding members within the elevator well around which members the said sections are led, within the well of the elevator, to the top of the well, along the top to the back of the well, down behind the cage to the foot of the well and from thence up the front of the well to the foot of the cage.

3. A safety device for use in connection with elevators comprising a guard made in a plurality of sections which are secured to the elevator cage above and below the opening therein, means for widening the space between the sections in the vicinity of the cage hoisting means, yielding connections between the cage and the sections of the guard, and guiding means within the well of the elevator whereby the said sections are led, within the well of the elevator, to the top of the well, along the top to the back of the well, down behind the cage to the foot of the well and from thence up the front of the well to the foot of the cage.

4. A safety device for use in connection with elevators, comprising a guard made in a plurality of sections which are secured to the elevator cage above and below the open ing therein, chains connected to the marginal edges of each section, a yielding connection between each end of each chain and the cage, and guiding means within the well of the elevator whereby the said sections are led, within the well of the elevator, to the top of the well, along the top to the back of the well, downbehind the cage to the foot of the well and from thence up the front of the well to the foot of the cage.

I OO

5. A safety device for use in connection tions are led, within the well of the ele vator, to the top of the well, along the top to the back of the well down behind the cage to the foot of the well and from thence up the front of the well to the foot of the cage.

6. A safety device for use in connection with elevators comprising a guard made in two sections having a space therebetween, means for widening the space between the sections for the passage of the cage hoisting means and each section secured to the elevator cage above and below the opening therein, and guiding means within the well of the elevator whereby the said sections are led, within the well of the elevator, to the top of the well, along the top to the back of the well, down behind the cage to the foot of the well and from thence up the front of the well to the foot of the cage, and means on the sections and on the wall of the well for preventing the inward movement of the guard.

7. A safety device for use in connection with elevators, comprising a guard made in two sections having a space therebetween, means for widening the space between the sections for the passage of the cage hoisting means and each section secured to the elevator cage above and below the opening therein, and guiding means within the well of the elevator whereby the said sections are led, within the well of the elevator, to the top of the well, along the top to the back of the well, down behind the cage to the foot of the well and from thence up the front of the well to the foot of the cage, projections on the sections and T-shaped slots in the wall of the well in the vicinity of the landing openings, adapted to receive said projections and to prevent any inward movement of the guard away from said openings.

In testimony whereof I affix my signature in presence of two witnesses.

BENJAMIN BATES.

Witnesses:

ANDREW HAMILTON, HARRY WALTER ALLSOPP.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

